1908.] OP THE FAMILY ORECTOLOBID.E. 351 



than the anal ; origin of first dorsal opposite to that of the pelvics ; 

 free edge of the fin straight or convex, anterior angle broadly 

 rounded, posterior angle nearly rectangular ; length of base 

 greater than the distance from second dorsal. Anal beginning- 

 below the middle of second dorsal ; free edge of the fin evenly 

 convex. Caudal fin l the length of the rest of the fish or rather 

 more ; lower lobe moderately deep and with the edge forming an 

 obtuse angle anteriorly. Pectoral with nearly straight free edge 

 and rounded angles, a little longer than broad, its length nearly 

 equal to its distance from the mouth or |- of the dis^-ance fi^om its 

 origin to that of the pelvics. Brownish ; young with small, 

 scattered, round, blackish spots. 



Tropical Atlantic ; Pacific Coast of Mexico. 



1-2. (530 and 400 mm.) St. Croix. 



3. (390 mm.) Cuba. Zool. Soc. 



4. (280 mm.) Jalisco, Mexico. Dr. A. C. BuUer. 



5. (230 mm.) S. America. Sir R. Schomburgk. 

 6-8. (740-2400 mm.) stuffed. W. Indies. 



2. GiNGLYMOSTOMA BREVICAUDATUM. 



Ginglymostoma bi'evicatidatum Giinth. & Playfair, Fish. 

 Zanzibar, p. 141, pi. xxi. (1866); Giinth. Cat. Fish. viii. p. 408 

 (1870). 



Nasal cirrus short, not nearly reaching the oral edge of the 

 nasal valve. Lower labial folds separated by a considerable inter- 

 space. Teeth tricuspid or pentacuspid, the middle cusp much the 

 strongest. Dorsal and anal fins subequal, each with broadly 

 rounded anterior angle, straight or slightly convex free edge, and 

 obtuse posterior angle. First dorsal originating a little in 

 advance of end of base of pelvics ; length of base less than the 

 distance from second dorsal. Anal beginning and ending respec- 

 tively a little behind the origin and end of the base of second 

 dorsal. Cau.dal fin rather less than y of the length of the rest of 

 the fish ; lower lobe deep and with the edge forming an obtuse 

 angle anteriorly. Pectoral with nearly straight free edge and 

 rounded angles, as broad as long, its length equal to its distance 

 from the eye or ^ the distance from its origin to that of the 

 pelvics. 



Zanzibar : Seychelles. 



Lieut.-Col. Plaj-fair. 

 Swinburne Ward, Esq. 



3. Ginglymostoma ferrugineum. 



Scyllium ferrugineum Less. Voy. Coquille, Zool. ii. p. 95(1830). 



Ginghpnostoma concolor Miill. & Henle, Plagiost. p. 22, pi. vi. 

 (1841). ■ 



Ginglymostoma muelleri Giinth. Cat. Fish. viii. p. 408 (1870) ; 

 Proc. Zool. Soc— 1908, No. XXIII. 23 



